The minds of the Marines Vigilant were shattered after an encounter with xenos[1]. After the encounter the Chapter as a whole refused their orders to fight the enemies of the Imperium and retreated to their Homeworld[2]. In response to this, the Inquisition[1] and the Adeptus Terra[2] would later order the Crimson Fists to destroy the compromised Chapter[1][2], which the Fists reluctantly did. Even as the Crimson Fists fleet began to bombard their planet from orbit, the Marines Vigilant refused to raise a single hand in their own defense as they were destroyed.[2]